Interface micro-texturing for interlaminar toughness tailoring: a film-casting technique

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Title: Interface micro-texturing for interlaminar toughness tailoring: a film-casting technique
Authors: Narducci, F
Lee, KY
Pinho, ST
Item Type: Journal Article
Abstract: In this work, we developed a film-casting technique to deposit thin (13 μm) layers of poly(lactic acid) (PLA) on the interface of carbon/epoxy prepregs, with the aim of increasing the interlaminar toughness. PLA patches with fractal shape were explored, based on preliminary results showing that the toughening effect increases when PLA is deposited at multiple scales simultaneously. Double Cantilever Beam (DCB) and 4-point End-Notched Flexure (4ENF) tests showed an increase in interlaminar toughness of, respectively, up to 80% for Mode I and 12% for Mode II. This is specially remarkable because the interface thickness is only 13 μm. Moreover, it was demonstrated that this technique can promote interaction between neighbouring layers where PLA has been cast, thus triggering fibre bridging and leading to a further enhancement of toughness.
Issue Date: 6-Feb-2018
Date of Acceptance: 16-Oct-2017
URI: http://hdl.handle.net/10044/1/56268
DOI: https://dx.doi.org/10.1016/j.compscitech.2017.10.016
ISSN: 0266-3538
Publisher: Elsevier
Start Page: 203
End Page: 214
Journal / Book Title: Composites Science and Technology
Volume: 156
Copyright Statement: © 2017 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/M002500/1
Keywords: 09 Engineering
Materials
Publication Status: Published
Appears in Collections:Faculty of Engineering
Aeronautics



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